I've been using this shampoo for about two weeks, and maybe I need to give it more time, but it hasn't done anything so far for my dry, itchy scalp. And after I rinse the shampoo out, my hair feels like straw (I didn't have this problem with the shampoo I'd been using previously), so I worry there is something rather harsh in there.

Five days ago I sent the following email to Nature's Gate: "I have read several troubling statements about polysorbate 20 and it possibly being contaminated with a by-product called 1,4-dioxane, a known carcinogen. Since polysorbate 20 is listed as an ingredient in this shampoo, I am concerned about using it. Can you please clarify? P.S. I would appreciate an explanation or clarification being in the form of an email, not a phone call." >>>Five days later they have yet to reply to my request for written info.